Autism is a life long non-progressive developmental disability that severely impairs the way sensory input is assimilated, causing problems in social behavior, communication and learning ability and hindering the establishment of normal social and parent-child relationships. Most of the time, those with autism demonstrate some degree of mental retardation. It is typically illustrated during the first three years of life. No known factor in the field of psychology has been identified as the cause; nor has a biomedical reason been found. Yet it is confirmed that autism is not caused by improper parental handling or adverse living environment but is a series of medical disorders, which can be identified as symptoms of autism. Current medical research suggests that autism is a disorder of early brain development, probably before 30 weeks gestation age